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Icesat-2 atlas beam steering mechanism (bsm)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hinkle, Matthew |
| Copyright Year | 2015 |
| Description | This work covers the design and test of a beam steering mechanism (BSM) used to accurately guide a laser on the Advanced Topographic Laser Altimeter System (ATLAS) down to Earth in order to measure elevation. It describes the main components in the BSM that allows it to perform and meet stringent requirements. Requirements of the BSM include two-axis steering of the transmitted laser beam, +-5000 uRad mechanical motion in each axis, and 1.5 uRad RMS pointing stability among many other requirements. The BSM uses four voice coil actuators in order to locate the mirror at the angle we need. There are four Differential Position Sensors that determine the position and angle of the mirror at all times. These sensors were verified through optical testing in both ambient and thermal conditions. Testing and extensive analyses were performed on the two-axis flexure throughout the program to check flexure thickness, positive margins, and infinite life. The mirror mount design has been modified to eliminate radial preload, while incorporating a titanium wave spring to provide an axial preload of 10.8N. The BSM underwent multiple tests in order to verify all components work as required under various conditions. |
| File Size | 2592776 |
| Page Count | 37 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150018098 |
| Archival Resource Key | ark:/13960/t6d26xq6m |
| Language | English |
| Publisher Date | 2015-09-01 |
| Access Restriction | Open |
| Subject Keyword | Equipment Specifications Transmitter Receivers Actuators Beam Steering Spacecraft Instruments Spacecraft Components Spacecraft Guidance Laser Altimeters Thermal Analysis Design Analysis Electronic Equipment Tests Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
